net.oschina.j2cache.hibernate3.J2CacheRegion Maven / Gradle / Ivy
/**
* Copyright (c) 2015-2017, Winter Lau ([email protected]).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.oschina.j2cache.hibernate3;
import net.oschina.j2cache.CacheChannel;
import org.hibernate.cache.*;
import org.hibernate.cache.access.AccessType;
import org.hibernate.cache.access.CollectionRegionAccessStrategy;
import org.hibernate.cache.access.EntityRegionAccessStrategy;
import java.io.IOException;
import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;
/**
* J2Cache implements Hibernate Cache Region
* @author winterlau
*/
public class J2CacheRegion implements GeneralDataRegion {
private String regionName;
private CacheChannel cache;
public J2CacheRegion(String name, CacheChannel cache){
this.regionName = name;
this.cache = cache;
}
/* (non-Javadoc)
* @see org.hibernate.cache.Region#destroy()
*/
@Override
public void destroy() throws CacheException {
}
/* (non-Javadoc)
* @see org.hibernate.cache.Region#getElementCountInMemory()
*/
@Override
public long getElementCountInMemory() {
return -1;
}
/* (non-Javadoc)
* @see org.hibernate.cache.Region#getElementCountOnDisk()
*/
@Override
public long getElementCountOnDisk() {
return -1;
}
/* (non-Javadoc)
* @see org.hibernate.cache.Region#getName()
*/
@Override
public String getName() {
return regionName;
}
/* (non-Javadoc)
* @see org.hibernate.cache.Region#getSizeInMemory()
*/
@Override
public long getSizeInMemory() {
return -1;
}
/* (non-Javadoc)
* @see org.hibernate.cache.Region#getTimeout()
*/
@Override
public int getTimeout() {
return -1;
}
/* (non-Javadoc)
* @see org.hibernate.cache.Region#nextTimestamp()
*/
@Override
public long nextTimestamp() {
return Timestamper.next();
}
/* (non-Javadoc)
* @see org.hibernate.cache.Region#toMap()
*/
@Override
@SuppressWarnings("rawtypes")
public Map toMap() {
try {
Map result = new HashMap();
for (Object key : cache.keys(this.regionName)) {
Object e = cache.get(this.regionName, (String)key);
if (e != null) {
result.put(key, e);
}
}
return result;
} catch (Exception e) {
throw new CacheException(e);
}
}
@Override
public void evict(Object key) throws CacheException {
cache.evict(this.regionName, (String)key);
}
@Override
public void evictAll() throws CacheException {
cache.clear(this.regionName);
}
@Override
public Object get(Object key) throws CacheException {
return cache.get(this.regionName, (String)key);
}
@Override
public void put(Object key, Object value) throws CacheException {
cache.set(this.regionName, (String)key, value);
}
private static class Transactional extends J2CacheRegion implements TransactionalDataRegion {
public Transactional(String name, CacheChannel cache) {
super(name, cache);
}
@Override
public CacheDataDescription getCacheDataDescription() {
return null;
}
@Override
public boolean isTransactionAware() {
return false;
}
}
final static class QueryResults extends J2CacheRegion implements QueryResultsRegion {
public QueryResults(String name, CacheChannel cache) {
super(name, cache);
}
}
final static class Entity extends Transactional implements EntityRegion {
public Entity(String name, CacheChannel cache) {
super(name, cache);
}
@Override
public EntityRegionAccessStrategy buildAccessStrategy(AccessType accessType) throws CacheException {
return null;
}
}
final static class Collection extends Transactional implements CollectionRegion {
public Collection(String name, CacheChannel cache) {
super(name, cache);
}
@Override
public CollectionRegionAccessStrategy buildAccessStrategy(AccessType accessType) throws CacheException {
return null;
}
}
final static class Timestamps extends J2CacheRegion implements TimestampsRegion {
public Timestamps(String name, CacheChannel cache) {
super(name, cache);
}
}
}